Problem Details Exception Handler

1.Post.ProblemDetails.ProblemDetailsExtensions.cs

public static class ProblemDetailsExtensions
{
	public static void UseProblemDetailsExceptionHandler(this IApplicationBuilder app, ILoggerFactory loggerFactory)
	{
		app.UseExceptionHandler(builder =>
		{
			builder.Run(async context =>
			{
				var exceptionHandlerFeature = context.Features.Get<IExceptionHandlerFeature>();

				if (exceptionHandlerFeature != null)
				{
					var exception = exceptionHandlerFeature.Error;

					var problemDetails = new ProblemDetails
					{
						Instance = context.Request.HttpContext.Request.Path
					};

					if (exception is BadHttpRequestException badHttpRequestException)
					{
						problemDetails.Title = "The request is invalid";
						problemDetails.Status = StatusCodes.Status400BadRequest;
						problemDetails.Detail = badHttpRequestException.Message;
					}
					else
					{
						var logger = loggerFactory.CreateLogger("GlobalExceptionHandler");
						logger.LogError($"Unexpected error: {exceptionHandlerFeature.Error}");

						problemDetails.Title = exception.Message;
						problemDetails.Status = StatusCodes.Status500InternalServerError;
						problemDetails.Detail = exception.Demystify().ToString();
					}

					context.Response.StatusCode = problemDetails.Status.Value;
					context.Response.ContentType = "application/problem+json";

					var json = JsonConvert.SerializeObject(problemDetails, SerializerSettings.JsonSerializerSettings);
					await context.Response.WriteAsync(json);
				}
			});
		});
	}
}

2.Post.ProblemDetails.Startup.cs

public class Startup
{
	public void Configure(IApplicationBuilder app, ILoggerFactory loggerFactory)
	{
		// ... código omitido

		app.UseProblemDetailsExceptionHandler(loggerFactory);
		app.UseMvc();
	}
}